76400123 has 4 divisors (see below), whose sum is σ = 79034640. Its totient is φ = 73765608.

The previous prime is 76400113. The next prime is 76400131. The reversal of 76400123 is 32100467.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 76400123 - 2⁶ = 76400059 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (76400113) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1317215 + ... + 1317272.

It is an arithmetic number, because the mean of its divisors is an integer number (19758660).

Almost surely, 2^76400123 is an apocalyptic number.

76400123 is a deficient number, since it is larger than the sum of its proper divisors (2634517).

76400123 is a wasteful number, since it uses less digits than its factorization.

76400123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2634516.

The product of its (nonzero) digits is 1008, while the sum is 23.

The square root of 76400123 is about 8740.7163894042. The cubic root of 76400123 is about 424.3244131505.

The spelling of 76400123 in words is "seventy-six million, four hundred thousand, one hundred twenty-three".